Apparatus for purifying air



(No Model.)

A. H. GREIWE. APPARATUS FOR PURIFYING AIR.

No. 585,568. 5 Patented June 29, 1897.

r 1 1 rrrr E 1/2 veizlo i" or/zey "UNITE I STATES PATENT OFFICE.

ADAM HENRY GREIWE, OF CINOINNATI', OHI'O.

APPARATUS FOR PU R|FY|NG AIR.

SPECIFICATION-forming part of Letters Patent No. 585,568, dated June 29, 1897. Application filed May 7, 1896. Serial No. 590,569. (No model.)

To all. whom it may concern: Be it known that I, ADAM HENRY. GREIWE, a citizen of the United States, and a resident of the city of Cincinnati, in the county of the various advantages resulting from their use conjointly or otherwisewill be apparent from the following description and claims.

I forced through my apparatus by suitable means.

In the accompanying drawings, Figure 1 is a view, partly in elevation and for the most part in central vertical section, illustrating the construction of an apparatus embodying my invention. Fig. 2 is a top or plan view of the first receptacle and shown on a diminished scale. Fig. 3 is atop view, on a diminished scale, of the second receptacle of the apparatus. Fig. 4 is a view of the dispersing device. Fig. 5-is a vertical central section of the conduit and hood or shield at the exit of the first receptacle. Fig. 6 is a bottom view of the devices shown in Fig. 5. p My invention was primarily designed to be used in connection with the air from a shoemanufactory, and I will now describe the same in connection with such a manufact-ory. This description will illustrate the operation of the-invention in connection with buildings and locations wherewith my invention is to be employed for the purification of air other than shoe factories. The air and what it carries is drawn or Such means as blowers or suction mechanism, &c are too well known to need description. Such air-moving mechanism is located at any point relative to my apparatus suitable for eifectively moving the air through it.

In constructing my apparatus I provide a receptacle or chamber A. 'The roof thereof or the inner upper portion B thereof I designedly arch. The fioor'O of this receptacle I make inclined to an outlet or dump delivery- I se.

conduit E. The upper end of this conduit is preferably located in the middle of the floor, and the latter inclines from every part of the and in connection with the dump-pipe E is a gate, door, or slide E for regulating the egress of matter collected in the chamber A through the conduit E. In the upper portion of the chamber A is the outlet or terminal end of the conduit F, bringing the air and its contents f-rom the factory or analogous place. The terminal portion of this conduit F is provided with a curved deflector F which serves to deflect downward the air and its contents entering chamber Athrough pipe F. There is an upper outlet-conduit G from the chamber A. The initial end of this outlet begins at the upper portion of chamber A, substantially as shown, and connects directly with the chamber N. The conduit G, before entering this chamber N, preferably first rises and then descends and enters the roof or top of chamber N. At the inlet of conduit G is located a dispersing device H, consisting of a hood H -in the ,form 013 a wide-spreading cone and a smaller cone H in a reverse position set in the mid portionof the bottom of the hood H The lower initial end of the conduitG is provided with a flaring flange G2 above the device H, and between the flange G above and the top of the device H below the air and what it remains charged with enters the eonduit G. The device H is held in place by suitable means, preferably by narrow con- .nections H extending. from the device H to the flange G In the chamber N is located a spraying device J ,preferably horizontally elongated from side to side, as indicated by dotted lines in Fig. 3. The liquid to be sprayed by this device is conducted thereto by.a suitable pipe, 9

as J and sprayed out in finely-divided particles, falls down through the chamber N,and collects at the bottom thereof, as indicated by the letter K. Partitions N N and N subchambers W, X, Y, and Z. The first partition N stops short of the bottom.- The second partition N stops short of the top and also admits of a place or places near its lower end where the liquid gathering in'the bottom of the chamber can flow forward toward the exit-pipe N The partition N stops short of the bottom. There is present wall D. At or the bottom of the floore in the pipe N a suitable stop-cock N for are present and divide the chamber, N into 9 5- -regulating the flow of liquid K from the her V to subchamber X, beneath the partition N and above the liquid K, nor' so as to intercept the passage of air from subchamber Y-to subchamber Z, beneath partition N, and above the liquid K. The number of partitions, as N", Niand N may be varied and the number of subchambers be likewise varied. V

From the chamber N (subchamber Z) extends an outlet-pipe L. The latter may be supported-by a support, as M, and this may be the wall of the building in which the (my) apparatus is located or be something else.

I will describe the mode in which my invention operates. J v

The air from the factory ent illustrative instance a shoe-factory, and burdened with fine particles of leather, .&c., and of dust, is brought into the conduit F and moved through the latter and delivered into the chamber A. By meahs of the location of the exit-orifice'of the conduit F and the direction of the latter part of the terminal portion of said pipe and of the deflector F and the shape of the chamber A this dirty surcharged air moves around the chamber A in a circular manner. As this air descends 7 toward the bottom ofchamberA the heavier particles of dirt and matter fall onto the bottom of chamber A and remain there, and the lighter particles,.&c., in the air pass on and o around and up, as indicated by the arrows, to

the roof of the chamber A, and there pass through the narrow openings between the flange (l ofthe conduit G and the upper surface of the hood 11 In reaching this or these narrow passages the freighted air for the most part is compelled to strike the under part of the device H and its velocity is lessened, and it is then compelled to pass out and back and down and up around the outer edge of the hood H \Vhile this operation is being performed, the dust and the dirt in the airhavc opportunity to fall, and much of the heavier part of the same in the airwill do so and will drop to the bottom of the chamberA.

Thus an additional amount of the dirt and dust coming in through conduit F will be deposlited at the bottom of chamber A. The inverted cone or conicalcenter piece H in the under side of the hood prevents dirt and dust or incrustations from remaining on the central portion of the hood, as they would be likely to do were the sharply-concaved and deeply-recessed center left uncovered. The air much relieved of its burdens, but still charged with much that is deleterious to the lungs and also often tothe'roofs of the adja-\ or mi1l,in the prescomminuted water or other liquid rushing from the spray-piece J and cross ng the cham-,.

ber. This water catches alargeportion of the dust and chemical substances that may be present in the air and carries them down to the bot-tom of the tankand into the water or other liquid K at the bottom of the vessel or chamber N. The air, now greatly purified, passes down under partition N ,and much of it comes into close contact with the water K and leaves on the latter still more of what it (the air) carries. The air rising passes up through subchamber X and over partition N and thence down through subchamberYand under partition N and up through subchamber Z. In making these movements the air is not only agitated, but much additional opportunity is afforded for extraneous matter which is left'in the air to fall onto the water K. The air thus now quite pure and innocuous and healthful passes up out of conduit L into the" outer or other atmosphere and mingles there with., r

The air from shops, factories, and labora-' tories is frequently impregnated and charged with deleterious substances. These the spray and the liquid in chamber N take and leave the air quite free therefrom. For instance,

in the case "of shoe-factories much of theto descend onto a suitable dump or into a desired receptacle. \Vhatever of this material thus dumped is of value can then be obtained andutilized. So-,also,the liquid running from the chamber. N can be made by well-known means to surrender thosematters it contains which are valuable. tories the fine remnants and scraps of leather and dust are used for various purposes in the arts, among which may be mentioned that such form the base of a composition much employed as a plastic out of which figures and models are made. q

lVhat I claim as new and of my invention, and desire to secure by Letters Patent, is-

1. In an air-purifying device, the chamber N having air-inlet G near one end, and a sprayin g device J, adjacent thereto, a liquid-space below, an exit-conduit N for the liquid, and an air discharge conduit L at or near that end of chamber N opposite where the inlet G enters; and partitions as N N, N, of which In thecase of shoe-fac-' N extends from the roof to near the upper line of the liquid, and the intermediate partition N extending from below the liquid-line up to near the roof, the partitions being inclined so as to form subchambers as W, X, Y,

and Z, the chambersbeing broadest in the vicinity of their exit-orifices, substantially as and for the purposes specified.

2. In an air-purifying device, the chamber N having air-inlet G-fiear one end,and a spraying device J adjacent thereto, a liquid-space below, an exit-conduit N for the liquid, and an air-discharge conduit L at or near that end of chamber N opposite where the inlet G enters, and partitions as N N N of which N extends from the roof to near the upper line otthe liquid, and the intermediate partition N extending from below the liquid-line up to near the roof, the partitions being inclined .so as to form subchambers as W, X, Y and Z,

the chambers being broadest in the vicinity of their exit-orifices, in combination with a preliminary chamber for first extracting the heavier or coarser substances from the air to be purified,substantially as and for the purposes specified, a

ADAM HENRY GREIWE.

Attest:

JULIUS G. PENN, K. SMITH. 

